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1.It needed 2 bones and 2 muscles.
2. The Pretend muscles were more flimsy and weren't as strong. The real ones wouldn't rip as easily or fling around as easy
3. The whole thing would fall apart or just barely stay together because they connect bone to bone.
4.Cartilae are the things that keep your bones from rubbing against each other and that would really hurt. Tendons are the thing that connect muscle to bone and ligament are the things that keep bone to bone.
5. This activity was fun to put the thing together and make it stay in place and move.
6. Mostly making everything stay together. This is because it was flimsy and some of the materials didn't work as well